.search-bar{
    width: 100%;
    height: 50px;
    margin-top: 200px;
}
.search-bar .search-bar-inner{
    margin: 0 auto;
    width: 680px;
    text-align: center;
}
.search-bar .search-bar-inner .search{
    width: 500px;
    height: 50px;
    outline: none;
    border:1px white;
    border-radius: 5px;
    display: inline-block;
    transition-duration: .2s;
    transition-timing-function: ease;
    order:2;
    flex: 1 1 0;
    color: #000;
    font-weight: 500;
    font-size: 20px;
    padding-left: 8px;
    padding-right: 8px;
    transition-property: opacity;
}
.search-bar .search-bar-inner .btn{
    border: 0;
    height: 50px;
    text-decoration:none;
    background: rgb(51, 103, 214);
    color:#f2f2f2;

    padding: 10px 30px 10px 30px;
    font-size:16px;
    font-family: 微软雅黑,宋体,Arial,Helvetica,Verdana,sans-serif;
    font-weight:bold;
    border-radius:3px;

    -webkit-transition:all linear 0.30s;
    -moz-transition:all linear 0.30s;
    transition:all linear 0.30s;
}